DaTaobao Tech
Dec 5, 2022 · Frontend Development
Canvas-Based Image Viewer with Touch Gestures for H5
The article presents a full‑featured H5 image viewer built on the native canvas API that supports touch gestures such as swipe, drag, pinch‑zoom and double‑tap, handles slide switching, boundary control, initial centering, mouse‑wheel emulation, and high‑resolution rendering via devicePixelRatio, eliminating the need for native bridges.
CanvasImage ViewerResponsive Design
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